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'''Ludwik Lejzer Zamenhof''' (,  – ), usually credited as '''L. L. Zamenhof''', was a Polish physician, inventor, and writer. He is most widely known for creating Esperanto, the most successful constructed language in the world. He grew up fascinated by the idea of a world without war and believed that this could happen with the help of a new international auxiliary language, which he first developed in 1873 while still in school.
SignatureZamenhof subskribo.svg
Known forCreating Esperanto
NationalityPoles|PolishKer Than, [ "L.L. Zamenhof: Who He Was, Why He's on Google"], ''National Geographic'', 15 December 2009.
EthnicityPolish Jews|Jewish
Birth placeBiałystok, Russian Empire
Death date{{death date and age|1917|4|14|1859|12|15|df=y}}
Birth nameLudwik Lejzer Zamenhof
Death placeWarsaw, Kingdom of Poland (1916–1918)|Poland
SpouseKlara Zamenhof
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